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From: "Troy Mitchell" <troy.mitchell@linux.spacemit.com>
To: "Emil Renner Berthing" <emil.renner.berthing@canonical.com>
Cc: "Troy Mitchell" <troy.mitchell@linux.spacemit.com>,
	"Rob Herring" <robh@kernel.org>,
	"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
	"Conor Dooley" <conor+dt@kernel.org>,
	"Yixun Lan" <dlan@kernel.org>, "Paul Walmsley" <pjw@kernel.org>,
	"Palmer Dabbelt" <palmer@dabbelt.com>,
	"Albert Ou" <aou@eecs.berkeley.edu>,
	"Alexandre Ghiti" <alex@ghiti.fr>,
	"Guodong Xu" <docular.xu@gmail.com>,
	"Yangyu Chen" <cyy@cyyself.name>, <devicetree@vger.kernel.org>,
	<linux-riscv@lists.infradead.org>, <spacemit@lists.linux.dev>,
	<linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 2/2] riscv: dts: spacemit: Add K3 BS01DCMA support
Date: Fri, 06 Nov 2026 03:39:13 +0000	[thread overview]
Message-ID: <DMNTD3S9CNW1.1H4CMNHDJM69D@linux.spacemit.com> (raw)
In-Reply-To: <CAJM55Z9nuO3MneQqBm3K2V2SjOXqXsZcDx9pMzVhxMJJ73xc9Q@mail.gmail.com>

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On Wed, 4 Nov 2026 07:43:03 -0500, Emil Renner Berthing wrote:
> > I just had a talk with Dong from Spacemit. He tells me the
> > BS01DCMA is the name of a module similar to the com260, only it has
> > a different form factor and each module consists of 2 separate K3
> > nodes. Similar to how the com260 module can be used in a small
> > carrier board (spacemit,k3-com260-ifx) and in a 10-node server
> > (spacemit,k3-com260-tq), I'd expect to see a
> > common arch/riscv/boot/dts/spacemit/k3-bs01dcma.dtsi describing the
> > module itself, and then an
> > arch/riscv/boot/dts/spacemit/k3-bs01dcma-<something>.dts that
> > describes the extra peripherals that can be accessed when the module
> > is plugged into the server.
> >
> > [...]
>
> Ah, it's called the Cluster Server RV2768
> https://spacemit.com/community/development-kit/cluster-server-rv2768

Hi Emil,

I've checked with our hardware team. BS01DCMA is indeed a module, so
the "board" wording in this series is wrong and I'll fix it in the next
version.

I'd still like to keep a single k3-bs01dcma.dts though. The module is
only used in the RV2768, and that carrier is essentially just cabling
to PCIe network cards. Those are found by enumeration and there's
nothing else on it for the K3 to control, so a
k3-bs01dcma-rv2768.dts would have nothing to describe.

Does that work for you?

-- 
Troy Mitchell

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      reply	other threads:[~2026-11-06  3:39 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-11-04  6:21 [PATCH 0/2] spacemit: k3: Add support for BS01DCMA board Troy Mitchell
2026-11-04  6:21 ` [PATCH 1/2] dt-bindings: riscv: spacemit: Add K3 BS01DCMA Troy Mitchell
2026-11-04  6:21 ` [PATCH 2/2] riscv: dts: spacemit: Add K3 BS01DCMA support Troy Mitchell
2026-11-04 12:21   ` Emil Renner Berthing
2026-11-04 12:38     ` Troy Mitchell
2026-11-04 12:43     ` Emil Renner Berthing
2026-11-06  3:39       ` Troy Mitchell [this message]

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